More horns, compression driver choices and opinions?

ICTWoody

Junior Member
I really like my big Jabo's, so when this pair of Jabo KH-30's popped up on the 'Bay for a good price with 1" adapters, I snagged them. They'll be here today. I am thinking I might try them on top of the 614's down the road. For fun. These are just about 12" in diameter.

My question is what drivers should I consider to bolt onto them. The adapters are 1" with 3-bolt mounting... so my extra 802's won't work. I really like my 288's on the big Jabo's, and I could get 1.4" adapters pretty easy, but keeping something that plays up near 20k on there would be better.

Obviously most of you are following the other threads with the 414's in 614 cab... so looking to keep the network about the same. These supposedly are good down to 500hz, but won't be crossing them lower than maybe 1600hz in the future.

What drivers should I consider? Wide open at this point. BMS? JBL? TAD?

- Woody

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Redboy

Knobophobe
They would work fine as a 2-way you think?

- Woody
I used them with a Fostex supertweeter for just a bit more air, but they do pretty well on their own. I don’t recall how they measured but I do remember how they sounded... and hearing a pair of them at @mhardy6647 ’s place recently made me wish I’d held onto them!
 

ICTWoody

Junior Member
Theyyyreee here... really cute little suckers. Like my KH-55's had puppies.

You guys think I should go for a 2" CD even for a 2-way? I have these adapters for 1" already (3-Bolt) and could get 1.4" adapters easy enough. But I mean... you're selling the JBL 2441's pretty hard.

Who has a set in the closet to sell me?

Here's some pics relative to the 32C and 802-8G.

- Woody

IMG_3416.JPGIMG_3420.JPGIMG_3418.JPGIMG_3417.JPG
 

mhardy6647

Señor Member
You guys think I should go for a 2" CD even for a 2-way? I have these adapters for 1" already (3-Bolt) and could get 1.4" adapters easy enough. But I mean... you're selling the JBL 2441's pretty hard.
I'd say especially for a two-way, but my ears ain't yours ;)
That said, if you've got a pair of 288s gathering dust... well... :)


Oh, one useful (?) point -- the problem with adaptors is... unless they're purpose built, they may spoil the carefully crafted horn flare by altering it at one of the more critical points in the expansion. I learned this from Joe Roberts, and it makes a lot of sense (in retrospect). You may be giving up a lot of what those horns bring to the table by use of an adaptor.

As a counterexample of sorts, I am fortunate enough to have a pair of EMILAR 1" to 2" throat adaptors for the EH-500s. It does make a difference relative to generic adaptors (to my ears, IMO, YMMV, etc.).

DSC_6853 by Mark Hardy, on Flickr

Finally, if you've seen Joseph Esmilla's cheap (and not so cheap) horn writeups on his blog, some horns are "optimized" for old-fashioned, "deep" drivers (e.g., the 802D), and some for shallow "modern" drivers.

Like most stuff in hifi, pretty much everything matters (depending upon one's standards and expectations).
... and one can't beat empiricism (IMO).
😎
 
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Thanks for posting that link Mark. I had seem his blog at some point along the way but had lost track of it.

I have a set of the Emilar 800 bowties and 802D drivers I am about to pair up. Currently I only have Altec N-500-E crossovers to use with that combo but sounds like I need to get that up into the 1200 range. (Paired with dual 414A)
 

ICTWoody

Junior Member
I'd say especially for a two-way, but my ears ain't yours ;)
That said, if you've got a pair of 288s gathering dust... well... :)

Oh, one useful (?) point -- the problem with adaptors is... unless they're purpose built, they may spoil the carefully crafted horn flare by altering it at one of the more critical points in the expansion. I learned this from Joe Roberts, and it makes a lot of sense (in retrospect). You may be giving up a lot of what those horns bring to the table by use of an adaptor.

Some good points there. So as of right now I would say a pair of 2441's would be at the top of my list, but damn, money.

You make a good point about the adapters. That actually crossed my mind. My KH-55's have 2">1.4" adapters that come from Jabo and they look pretty seamless. So I'm set there.

What 2" modern drivers would be worth considering? I know the 2441's can be had for a fair price if I'm patient. But I'm thinking that a pair with close serial numbers to make sure they have the same phase plug, but in need of new phrams might be the way to go... and that might take some time to find the deal.

Seems like CD tech would have had to advanced in recent years. But maybe not for hifi use? It would be great to just order up some drivers from Parts Express that sound great and don't need any work. I had 2" B&C ferrite pancake drivers on my Klipsch monsters and they sounded pretty good. But I do know I really really like AlNiCo.

- Woody
 
It sounded like in that JE Labs blog that they felt the pancakes were a good match with the modern horns and waveguides while the older Altecs, JBL's etc were the better match on old horns.
 
This past weekend I listened to my son's system which was set up with TAD 4001 drivers on Emilar EH-500 horns with a 11" TAD woofer in a vented cabinet. This was a very nice sounding combination especially driven by his new PP 47 amps.
 

ICTWoody

Junior Member
Maybe These? I don't know anything about them.

I've owned those and now my friend and forum member @jhoyt has them now. He had to source diaphragms for them. He seems to like them but I've never actually heard them. I didn't realize they had 3-hole mounts as well as 2-hole. Maybe he'll have to bring those drivers over and we can give them a whirl. ;-)

- Woody
 
If I had your stuff in my house, the first thing I would do is put that 802 on top of the 288/Onken and make a three way.
 
I've owned those and now my friend and forum member @jhoyt has them now. He had to source diaphragms for them. He seems to like them but I've never actually heard them. I didn't realize they had 3-hole mounts as well as 2-hole. Maybe he'll have to bring those drivers over and we can give them a whirl. ;-)

- Woody

Do you happen to know where he got diaphragms for them? I'm looking for some ea-175's and would love to have a source for diaphragms as well.
 
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